<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=no">
    <title>Document</title>
   <link href="mystyle.css" type="text/css" rel="stylesheet" />
   <link href="/mystyle.css" type="text/css" rel="stylesheet" />
   <link href="./mystyle.css" type="text/css" rel="stylesheet" />
   <link href="../20220223/mystyle.css" type="text/css" rel="stylesheet" />
   
   <!-- <link href="../mystyle2.css" type="text/css" rel="stylesheet" /> -->
   
<style> 

</style>
</head>

<body>
    <h1>66</h1>
    <h1 class="bo" id="bbb">111</h1>
     <!-- 虽然html语言虽然规定id值不能重复， 但是浏览器很宽容，并不会报错 -->
    <!-- <h1 class="bo" id="bbb">我和特变</h1> -->
    <!-- <liubotao>阿萨德饭卡里睡大觉风口浪尖</liubotao> -->
    <!-- html中没有这个标签 此语句是错误的，虽然html语言虽然规定不能用，
 但是浏览器很宽容，并不会报错 -->
    <h2 style="font-size: 50px;">222</h2>
    <h3 class="bo" >33</h3>
    <h4  class="bo" >44</h4>
    <h1 class="bo" >55</h1>
 
</body>

</html>